It’s winner-take-all day in the 34th America’s Cup in San Francisco, and it looks like the race will go on as scheduled.

As of 12:30 p.m., the winds were well below the 24.4-knot limit. Race officials want Race 19 to start as close as possible to the scheduled 1:15 p.m. slot because the breeze will pick up as the afternoon goes on.

Oracle Team USA can complete one of the greatest comebacks in sports history by winning the race and retaining the Cup it captured from the Swiss team Alinghi in Valencia, Spain, in 2010. Twice in these finals, Oracle was down by seven races, but it has won seven in a row and nine of the last 11.

If Emirates Team New Zealand wins, it would win the Cup for the third time in 18 years.

At his morning briefing, regatta director Iain Murray said Oracle definitely has the upper hand going into the climactic race. “Knots of speed have emerged from Oracle,” he said, pointing to the defender’s amazing acceleration to overtake the Kiwis on the upwind leg in Tuesday’s second race. “The pendulum has moved to Oracle,” he said.

The Kiwis have the port-entry advantage, which will allow them to enter the prestart box 10 seconds ahead of Oracle.